tree 160b81e344cfb0deae48c92ca8a17cd88c9e2df8
parent 69e3aad47cacd419e194fca1e5a95158dc50aee0
author Yan Wang <yawanng@google.com> 1588286901 -0700
committer Yan Wang <yawanng@google.com> 1588295818 -0700

perfetto: Use a global map to control the access of state change
subjects.

These subjects are used to managed by the callback, which is
assumed to only be triggered by perfetto thread. However,
iorap also calls this callback to handle too many perfetto tracing
instance. Add a global map to manage them to avoid use-after-free
bug.

Bug: 153627573
Change-Id: Id31b992438914b3b1cfba0cd693999897c3a52fe